mybatis plus使用聚合函數
QueryWrapper queryWrapper = new QueryWrapper();
queryWrapper.select(“sum(id) as ids”);
Map<String, Object> map = tScmVatMainService.getMap(queryWrapper);
QueryWrapper queryWrapper = new QueryWrapper();
queryWrapper.select(“sum(id) as ids”);
Map<String, Object> map = tScmVatMainService.getMap(queryWrapper);